Lock.



No. 660,87l'. Patented 0st. 30, |900.

, C. C.'&.G. H. SPENG'LER. Lock.

(Application led July 20, 1900.)

(No lludels with suitable dies, the openings A providing UNITED STA-TES PATENT OFFICE.

CHARLES O. SPENGLER AND GEORGE H. SPENGLER, OF ROOKFORD, ILLINOIS.

LOCK.

SPECIFICATION forming part of Letters Patent No. 660,871, dated October 30, 1900.

Application led July 20, 1900.v

To @ZZ whom it may concern:

Be it known that we, CHARLES C. SPENGLER and GEORGE H. SPENGLER, citizens of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Mortise-Locks, of which the following is a specification.

The object of this invention is the production of a look of the kind mentioned which shall be simple, strong, and easily and cheaply assembled.

It relates also to the process employed in producing the same.

In the accompanying drawings, Figure 1 is a face view of the lock assembled, the face of the case being broken away to show the bolt and the spring. Fig. 2 is 'a face View of the blank from which is formed the back piece of the lock-case. Fig. 3 is a perspective view of said back piece, it being the blank shown in the preceding figure formed up, also having the key-post inserted.y Fig. 4 is the blank from which the face of the lock-oase is formed. Fig. 5 shows the blank illustrated in the preceding figure formed up. Fig. 6 is the blank for the lock-bolt. Fig. 7 shows the blank illustrated in the preceding figure after the next step of the operation has been performed-to wit, the punching of the springholding opening. Fig. 8 is a View of the lockbolt after the next step in the operation, that of inserting the spring, has been performed. Fig. 9 is a View of vthe lock-bolt from the opposite side thereof, the spring having been removed to show the slotin thewebintended for its reception, also the portion of the web which is left to retain the spring from accidental displacement. Fig. lO is a section through the lock complete on dotted line 10 10 of Fig. l. Fig. ll is a fragmental edge View of the bolt, illustrating the means of securing the spring thereto.

Like letters of reference indicate corre# sponding parts throughout the several views.

In the production of this lock we provide the back piece A. (Shown in blank form in Fig. 2.) This blank is cut from sheet metal means for securing the front or cover to the back piece A, the hole A2 for receiving the opening A2.

Serial No. 24,267. (No model.)

key-post A3 and the opening A4 for the bolt being stamped in the blank in the operation of cutting it out. After the blank A- has been thus prepared the selvage Aiis bent at right angles to the back, as shown in Fig. 3, and the key-post A3 is riveted in its place in the The face of the lock is stamped out in the same manner from a piece ot' sheet metal, forming the blank B, having the double keyhole B', the two projections H2011 each of the opposite sideA edges of the blank B having the riveting-lugs B3 for entering the openings A' in the back of the lock and the opening B4 for the rear end of the bolt.

The face of the lock is formed, as shown in Fig. 5, by bending lthe projections B2 of the blank B downward at right angles to the body of the blank.

The bolt, which is illustrated quite fully in Figs. 6, 7, 8, and 9, is formed by stam ping the blank O from sheet metal. This blank has the head port-ion O', theusual notch O2 for limiting the rearward throw of the bolt, and the projection C3, upon which the fastl end of the spring is intended to bear. In the next operation thehole O4 is formed in the boltblank O, leaving a slight web O5 of material between the hole O4 and the edge of the blank, and the bolt is completed by driving a fiat spring C6 edgewise downward against the web C5, breaking the latter down and forcing they spring C6 into the narrow opening O7 thus formed in the blank O. The Whole web O5 is not destroyed, a little portion remaining on one side of the spring to hold the latter in place in the bolt C. The spring O6 is thus held in lhe slot C7 with its inner end in the opening O4, giving to the spring a particularly free movement. The strain of flexure not falling upon any -particular point in its length insures the long life of the spring.

In assembling the lock the spring CG is driven into place as just described, breaking A down the web O5 from the side of the bolt O that will lie next to the back piece A. In right-hand locks this will be from one side of the bolt and in left-hand locks from the opposite side. The bolt O is next put in place in its opening 'A4 in the selvageA5 and the face B secured over it by riveting the lugs B3 on the rear side of the back piece A, the

IOO

rem' end of the bolt C and the spring C"i eX- Lending oubward Lhrough Ihe opening B4, formed for Lhil purpose in the face-blank B. The look is finished :ind operated in the usual manner.

l. In a loek,in combination,alockease; a bolt; and a spring; the bolt; being formed with :L thin web portion adepned lo be die@ placed by the spring when the lamer is forced into said web porLion.

2. A boltJ for locks, having an opening in its body portion formed so near its edge as Lo leave n thin web of material between the Wall of the opening and the edge of the bolt1,wl1ieh the spring.

CHARLES C. SPENGLER. GEORGE H. SPENGLER. iVibnesses:

HOWARD D. COLMAN, L. L. MILLER. 

